Intego's desktop security program offers multi-level, multi-user security for files, documents, folders and applications with secure deletion, password protection and time restrictions.

Makers of OpenSSH Helper and Secure Shell Helper.

Isolates, detects and removes spyware, keystroke loggers, and trojan horses for Mac OS and Mac OS X.

Utility for creating, managing and backing up encrypted disk images, and for encrypting USB sticks and other external drives. Free trial version available.

Data shredder.

Passgen is a handy Mac OS X Dashboard Widget for generating pronouncable and easy to remember passwords.

Advanced Macintosh security software implementing Apple Computer's latest Mac OS 9 technology.

An encryption program that can be used outside the United States and Canada.

Silently and intelligently watches for suspicious behavior, and when triggered, invokes a solid filter which completely bans the potential intruder from your Macintosh

A site dedicated to security-related issues and software on the Macintosh.